CN102603032A - Waste oil separation device - Google Patents

Abstract

The invention relates to a trench oil separating device, wherein a funnel-shaped sediment hopper is arranged at the bottom of an adjusting tank, a drain valve is arranged at the bottom of the funnel-shaped sediment hopper, a pressure control valve and an oily water pipe are arranged at the lower part of the bottom of the adjusting tank, the inner end of the oily water pipe is connected with a floating body inlet through a hose, the outer end of the oily water pipe is provided with a valve and a pipeline, and the pipeline is connected with the oily water inlet at the bottom of an oil tank; the sewage inlet is communicated with a cyclone arranged on an inner tank in the inner cavity of the oil removing tank through a pipeline, an inclined plate oil remover is arranged between the periphery of the inner tank and the inner cavity wall of the oil removing tank, a pressure return water inlet is arranged at the bottom of the inner tank, a water outlet is arranged at the upper part of the inner tank, the water outlet connecting pipeline penetrates through the oil removing tank body to be communicated with the outside, an overflow groove is arranged at the upper part of the oil removing tank, and an oil discharge port is arranged at the bottom. The oil-water separation is realized by utilizing the liquid level difference formed when sewage flows through the device, and the oil-water separation device has the advantages of good oil-water separation effect, small occupied area, simple structure and good stability.

Description

Waste oil separation device

technical field

The present invention relates to an oil-water separation device, in particular to a separation device for recycling waste oil.

Background technique

The traditional collection of waste oil is manual collection after long-term sedimentation and flotation in multi-stage oil pools, which has the problems of low efficiency, cumbersome work and harsh environment.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a method that adopts the theory of shallow pool sedimentation, the principle of cyclone separation, the principle of wetting and coalescence, and the principle of inclined plate oil removal, which improves the separation surface of the unit pool volume and separates oil from water. Improved gutter oil separation device.

The technical method adopted by the present invention to solve its technical problem is: a kind of sewer oil separation device has a regulating tank, a degreasing tank and a connecting pipeline, the bottom of the regulating pond is provided with a funnel-shaped sediment bucket, and the bottom of the funnel-shaped sediment bucket is A sewage valve is installed at the bottom; a pressure control valve and an oily sewage pipe are installed at the bottom of the regulating tank, and the inner end of the oily sewage pipe is connected to the inlet of the floating body through a hose, and a valve and a pipeline are installed at the outer end of the oily sewage pipe. It is connected with the oily sewage inlet at the bottom of the oil removal tank; the sewage inlet is communicated with the cyclone installed on the inner tank in the inner cavity of the oil removal tank through a pipeline, and the outer periphery of the inner tank is connected with the inner cavity wall of the oil removal tank. A sloping plate degreaser is installed between them, the bottom of the inner tank is provided with a pressure return water inlet, and the upper part of the inner tank is provided with a drain port, and the drain port is connected to the outside through the tank body of the degreasing tank. The upper part of the oil removal tank is provided with an overflow tank, and the bottom of the overflow tank is provided with an oil discharge port, and the bottom of the oil removal tank is provided with a sludge discharge port.

The included angle of the slope of the funnel-shaped sediment bucket is 45 degrees.

The beneficial effects of the present invention are: the liquid level difference formed when the sewage flows through the device is used to realize the oil-water separation, the residence time of the waste water can be shortened, the volume of the equipment is reduced, the oil-water separation effect is good, the floor area is small, the purely mechanical design, the structure Simple and stable.

The invention does not need to add any reagents and medicines in the production process, has no secondary pollution, and is simple and convenient to install and maintain. It can be used as long as it is connected to the water inlet and outlet pipes. It does not need special personnel to operate and maintain, and only needs to collect oil regularly. It is suitable for For all oil types, the higher the oil concentration, the better the effect. It is suitable for the treatment of wastewater containing natural petroleum and petroleum products, tar and tar fractions, animal and vegetable oils, etc., especially suitable for the treatment of oily wastewater in the catering industry.

Description of drawings:

Fig. 1 is a structural schematic diagram of the present invention.

In the figure: 1-Regulating tank, 2-Oil removal tank, 3-Pipeline, 4-Funnel-shaped sediment bucket, 5-Drainage valve, 6-Pressure control valve, 7-Oil sewage pipe, 8-Hose, 9-Floating body Inlet, 10-valve, 11-oil and sewage inlet, 12-inner tank, 13-cyclone, 14-slope plate oil remover, 15-pressure return water inlet, 16-drainage port, 17-overflow tank, 18 -Oil drain.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to Fig. 1, a kind of sewer oil separation device has adjusting tank 1, degreasing tank 2 and connecting pipeline 3, and the bottom of described adjusting tank is provided with funnel-shaped sediment hopper 4, and the bottom of each funnel-shaped sediment hopper 4 is installed There is a sewage valve 5, which forms a funnel-shaped sediment bucket 4 at an angle of 45 degrees, so that it is easy to clean on the one hand, and on the other hand, it prevents the turbulence of the water flow from bringing a large amount of sediment and other slag into the subsequent treatment equipment; 1 The bottom part is equipped with a pressure control valve 6 and an oil and sewage pipe 7. The pressure control valve 6 can stabilize the liquid level, so that the water flows into the subsequent processing equipment to obtain a flow that is not too large, so as not to exceed the processing capacity of the subsequent equipment. At the same time It also has the effect of draining water when the daily displacement is extremely large; the inner end of the oily sewage pipe 7 is connected with a floating body inlet 9 through a flexible hose 8, and the floating body inlet 9 remains at the top of the oily sewage water level regardless of the level of the oily sewage water level. In order to better absorb the oily sewage in the upper layer; the outer end of the oily sewage pipe 7 is equipped with a valve 10 and connected with a pipeline 3, wherein the water valve 10 plays the role of closing the water flow. When the subsequent processing equipment needs to be cleaned, repaired or replaced parts, etc., the water flow can be closed for operation; the pipeline 3 is connected to the oily water inlet 11 at the bottom of the oil removal tank 2; the oily water inlet 11 passes through the pipeline 3. It communicates with the cyclone 13 installed on the inner tank 12 in the inner cavity of the oil removal tank 2. When the oily sewage flows out tangentially from the outlet of the cyclone 13, a vortex is formed in the tank. At this time, the oil floating in the water is easy Due to the effect of density difference, it first floats up to the oil layer, and the particle size is not very large. It can reach the oil layer quickly with the help of the upward partial velocity of the water flow, and stick to the oil layer. Some oil particles with smaller particle size are less than 80 When the oil particle is ~100μm, the floating speed is very slow, and even has no ability to float. This part of the oil particle is continuously aggregated toward the center under the action of the centripetal force generated by the vortex water flow, and the oil particles collide with each other while moving toward the center. The probability is greatly improved, the continuous collision coalesces into large oil particles and floats up, and the oil droplets affected by the centripetal force will wet and adsorb on the surface of the outer wall (oleophilic material) of the inner cavity, so that the surface of the material is almost covered by oil until Saturated, the oil droplets that flow again are more likely to wet and adhere to the surface, and the attached oil droplets continue to coalesce and expand to form an oil film. Due to the buoyancy and the impact of the water flow, the oil film begins to fall off into the water to form oil droplets, which automatically float up In the oil layer, this lipophilic material can be polypropylene plastic, which is the commonly used "wetting coalescence" in the petroleum industry; a slant plate is installed between the outer periphery of the inner tank 12 and the inner wall of the oil removal tank to remove oil. Device 14, inclined plate degreaser 14, which belongs to physical degreasing, is a gravity separation technology. The gravity separation method to treat oily sewage is based on the difference in density between oil and water, and uses the density difference between oil and water to make the oil float up to achieve the purpose of oil-water separation. The bottom of the inner tank 12 is provided with a pressurized return water 15 inlet, and the upper part of the inner tank 14 is provided with a drain port 16, and the drain port 16 is connected to the pipeline through the tank body of the oil removal tank 2 and communicates with the outside. The top of 2 is provided with overflow groove 17, is provided with oil outlet 18 at overflow groove 17 bottoms. As shown in the figure, when the oil separated from oil and water in the oil removal tank 2 is higher than the overflow weir, it will flow out from the oil discharge port 18 of the overflow tank 17; the separated sewage enters the inner tank through the pressure return water inlet at the bottom of the inner tank. The bottom of the oil removal tank is provided with a sludge discharge port 19 outside the tank through the drain port.

The present invention is a sewer oil separation and collection device with high efficiency, low energy consumption, low cost and simple process. The whole device is mainly divided into two parts: a regulating tank and an oil removal tank. The conversion of oil into high-efficiency biodiesel not only effectively alleviates the pressure of oil shortage, but also reduces air pollution as a fuel.

Claims (2)

1. sewer oil tripping device is characterized in that: equalizing tank is arranged, remove oil tank and connecting pipeline, said equalizing tank bottom is provided with the funnel-form combustion chamber hopper, in the bottom of funnel-form combustion chamber hopper wash water valve is installed; Pressure controlled valve and greasy dirt water pipe are installed in the equalizing tank bottom, have buoyancy aid to enter the mouth in the inner of greasy dirt water pipe through hose connection, said greasy dirt water pipe outer end is equipped with valve and pipeline, and this pipeline and the above-mentioned oily water inlet that removes tank bottom join; Said sewage inlet communicates with the swirler-that is installed in except that on the interior jar in the inner chamber of oil tank through pipeline; Interior jar of periphery and except that between the oil tank internal chamber wall swash plate oil eliminator is installed, said interior pot bottom is provided with and pushes back water inlet, and said interior jar top is provided with water port; This water port connecting pipeline passes except that oil tank body and communicates with the outside; Said top of removing oil tank is provided with overflow groove, is provided with oil discharge outlet in isopipe root, and said bottom of removing oil tank is provided with sludge discharging port.

2. sewer oil tripping device as claimed in claim 1 is characterized in that: said funnel-form combustion chamber hopper inclined-plane angle is 45 degree.

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